Business SIP Provider

Provider	Plan Details	Monthly Rate *
	PBX SIP Trunking Compatible with nearly all PBX systems US-based support No contracts at all	$14.95	Details 143 Reviews
	Unlimited Extension Unlimited calling and long distance Company Call Record, Voicemail to email transcription No contracts, not setup or installation fees	$24.99	Details 33 Reviews
	RingCentral Office Unlimited calling and faxing No Commitment, No Setup Fees, No Installation	$19.99	Details 54 Reviews
	8x8 IP Trunking No contract required. Unlimited Calls (9 free countries) Save 50% or more	$29.99	Details 84 Reviews
	Smart PBX Unlimited Use of All Features Free Long-Distance No Contracts or Hidden Fees	$21.95	Details 135 Reviews
	Unlimited Business SIP Solution Best overall quality & service Unlimited calling in/out Month to month agreement	$24.95	Details 14 Reviews

*Taxes and other fees may apply.

VoIP Hardware Solutions

Provider	Solution Details
	VoIP Phones and Hardware Over 90 manufacturers and 6,500 products Live experts ready to answer your questions Volume pricing and financing for resellers	Details
	Hardware for Asterisk TDM Interface Boards & Gateways Guaranteed for life Often Copied, Never Duplicated	Details

SIP <-> SS7 Gateways

• SS7 to SIP Solutions Scalable SS7 to SIP Signaling Gateway Solutions from Teleprime Advanced Communications Division
• Janus Systems High-density SS7/ISDN/CAS/SIP Signaling Converter
• Cosmos SS7-SIP Gateway Turn-key, high performance SS7/C7 solution from Cosmact. Scales from 1E1 to 64E1 per chassis. Supports single point code across multiple chassis. Flexible built in routing/digit manipulation rules for SS7/SIP conversion.
• Verisign offers a SIP to SS7 interconnection service.
• SS7/SIGTRAN SIP access service available at: The Voice Peering Fabric.
• Dialogic has an integrated media and signalling VoIP gateway that supports SS7, PRI and CAS for PSTN with SIP and H.323 for IP. IMG1010. Dialogic BorderNet 500 Gateways Provides flexibility in connecting to a wide variety of services and equipment, including SIP trunks, PSTN trunks, and legacy, hybrid, and IP PBXs.
• SIP SS7 Gateway - Squire Technologies' media gateway provides full call control routing and supports SIP, H.323, MGCP, H.248 and SS7, PRI ISDN, CAS, R2 + see more SS7 VoIP Case Studies
• Sangoma SMG: Asterisk SS7 Gateway Integrated Asterisk + SS7 Gateway Solution. Scalable and Expandable Asterisk architecture. Capacity for 16E1+. Telco certified around the world.
• Simmortel SIP Gateway: SS7 Affordable Gateway Solution built on Sangoma Cards. Scalable and Redundant SS7 architecture. 480+ concurrent calls. Mail: info@simmortel.com
• Topex Eones Topex Eones offers seamless migration path from legacy TDM networks (SS7, ISDN) to VoIP networks(SIP&H.323), with a maximum capacity of 300 simultaneous calls( 10 E1 to 300 VoIP calls ).
• OpenCloud Inter-Network Gateways - IP to IN and IN to IP translators

Resources

• RFC 3372 - Best current practise: Session Initiation Protocol for Telephones (SIP-T): Context and Architectures (About SIP - PSTN gateways)
• Master Thesis by Gonzalo Camarillo, published 1998 http://standards.ericsson.net/gonzalo/papers/report.pdf
• "Integration of SIP & SS7 for VoIP: Opportunities and Challenges" by James Rafferty at Cantata Technology. SIP Magazine March 2007

Products

• see SS7 Protocol Converters and Gateways

See Also

• SS7
• PSTN
• SIP